Modern text editors allow you to use pre-defined snippets of code, that you save and quickly add later, to improve your workflow. Emmet is a plugin for text and code editors lets you quickly type CSS-like abbreviations and automatically expand them into a full block of code, saving you a ton of time and hassle.

Plug-ins can open vulnerabilities in even relatively secure browsers like Chrome. Even coders, like Jeff Atwood, can fall victim. Here's how to reign in plug-ins like Java, or disable them entirely, in Google Chrome.